18-letter words containing i, c, h, n, o, m
- school of motoring — a centre where people pay for lessons to learn to drive
- self-comprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
- shipping documents — documents relating to the sending of a shipment of goods, for example containing details of contents, weight, value etc.
- shotgun microphone — a directional microphone with a narrow-angle range of sensitivity.
- sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
- sodium thiocyanate — a white powder or colorless, deliquescent crystals, NaSCN, used chiefly in organic synthesis and in medicine in the treatment of hypertension.
- stinking chamomile — mayweed.
- synthetic geometry — elementary geometry, as distinct from analytic geometry.
- systematic phoneme — a phonological unit in generative phonology representing an underlying form that takes into account the relationship between phonological patterns and morphological variation, as the unit underlying the second vowel in both derive and derivative.
- the black mountain — a mountain range in S Wales, in E Carmarthenshire and W Powys. Highest peak: Carmarthen Van, 802 m (2632 ft)
- the uncircumcision — the gentiles
- thermionic current — an electric current produced by the flow of thermions.
- thermoluminescence — phosphorescence produced by the heating of a substance.
- thioantimonic acid — a hypothetical acid, H3SbS4, known only in the form of its salts
- to come unstitched — to go wrong or awry
- vermilion rockfish — a scarlet-red rockfish, Sebastes miniatus, inhabiting waters along the Pacific coast of North America, important as a food fish.
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.
- world championship — an international competition in a particular sport or activity for people all around the world
- writ of attachment — a document by which a court orders the seizing of property in order to ensure satisfaction of a judgement